GPS Accuracy Test

GPS Accuracy Test is a GPS test and GNSS status app that shows real-time satellite data from your Android phone. Check GPS accuracy, GNSS signal strength, satellites in view, satellites used in fix, location accuracy, coordinates, altitude, speed, bearing, azimuth, elevation, satellite system and signal band.
Use the app to see how your phone receives navigation satellites and how stable your current location fix is. The app shows connected satellites used for your current position, all satellites detected by your device, signal quality, C/N0 signal level, GPS/GNSS fix status, horizontal accuracy, vertical accuracy, HDOP, VDOP, PDOP and live location updates.

The GNSS sky plot shows satellites around your phone by direction and elevation. You can compare satellites used in fix with satellites in view, so you can understand why GPS accuracy is strong, weak or unstable in different places.

The satellite details screen shows detailed GPS/GNSS data in a clear table, including satellite ID / SVID, satellite system, fix use, C/N0 signal strength, elevation, azimuth and band. Supported satellite systems may include GPS, Galileo, GLONASS, BeiDou, QZSS, SBAS and NavIC / IRNSS, depending on your Android device.

The map screen includes a 60-second GPS/GNSS accuracy test. Stand still outdoors with a clear view of the sky and run the test to measure location stability over time. The result shows best accuracy, average accuracy, worst accuracy, position drift, average C/N0, best C/N0, average used satellites and fix drops.

Main features:
• GPS test and GNSS status screen
• Real-time GPS / GNSS satellite data
• Satellites in view
• Satellites used in fix
• Connected satellites sky plot
• GNSS sky plot / satellite radar view
• GPS signal quality
• C/N0 signal strength
• Horizontal accuracy and vertical accuracy
• Latitude and longitude coordinates
• Altitude, speed and bearing
• 3D Fix and live fix status
• HDOP, VDOP and PDOP values
• Satellite ID / SVID
• Satellite system: GPS, Galileo, GLONASS, BeiDou, QZSS, SBAS, NavIC / IRNSS
• Satellite elevation and azimuth
• Signal band such as L1, L5, E1, B1 and more when available
• Satellite signal and fix details table
• Sort satellites by used first, signal, system or band
• Map view with current GPS position
• 60-second GPS/GNSS accuracy test
• Best, average and worst accuracy results
• Position drift measurement
• Average used satellites and fix drops
• Decimal, DMS, DMM, UTM, MGRS and USNG coordinate formats
• Metric and imperial units
• True North and Magnetic North
• 12-hour and 24-hour time format
• Location update rate settings
• Keep screen on mode
• Battery and estimated active / background usage information

Connected Satellites
Satellites currently used to calculate your location.
In View
Satellites detected by your device, but not always used for positioning.
Used in Fix
Number of satellites actively used to calculate your current location.
Strong Signal
Satellites with good signal quality.
Weak Signal
Satellites with low or unstable signal quality.
Not Used in Fix
Satellites detected by the device but not used for the current location fix.
Horizontal Accuracy
Estimated location accuracy on the ground, for latitude and longitude.
Vertical Accuracy
Estimated accuracy of your altitude measurement.
Fix Type
Shows whether your device has a valid GPS/GNSS location fix. 3D Fix means latitude, longitude and altitude are available.

Provider
The source of the location data. GNSS means satellite-based positioning.

Latitude / Longitude
Your current geographic coordinates.

Altitude
Your height above sea level.

Speed
Your current movement speed.

Bearing
Your movement direction in degrees.

For best results, use the app outdoors in an open area with a clear view of the sky. GPS/GNSS accuracy depends on your phone hardware, satellite visibility, signal strength, weather, buildings, trees and surrounding terrain.

Recent changes:
- Minor improvements and bug fixes